Mechanical System Tests

STALL TEST
The object of this test is to check the overall performance of the transmission and engine by measuring the stall speeds in the D and R positions.

NOTICE:
- Do the test at normal operating fluid temperature 50 - 80 °C (122 - 176 °F).
- Do not continuously run this test longer than 5 seconds.
- To ensure safety, conduct this test in a wide, clear level area which provides good traction.
- The stall test should always be carried out in pairs. One technician should observe the conditions of wheels or wheel stoppers outside the vehicle while the other is doing the test.

MEASURE STALL SPEED
- Chock the 4 wheels.
- Connect OBDII scan tool or LEXUS hand-held tester to DLC3.
- Fully apply.the parking brake.
- Keep your left foot pressed firmly on the brake pedal.
- Start the engine.
- Shift into the D position. Press all the way down on the accelerator pedal with your right foot. Quickly read the stall speed at this time.

Stall speed: 2,200 ± 150 rpm

- Do the same test in the R position.

Stall speed: 2,200 ± 150 rpm





EVALUATION

TIME LAG TEST
When the shift lever is shifted while the engine is idling. there will be a certain time lapse or lag before the shock can be felt. This is used for checking the condition of the O/D direct clutch, forward clutch, direct clutch. and first and reverse brake.

NOTICE:
- Do the test at normal operating fluid temperature 50 - 80°C (122 - 176 °F).
- Be sure to allow 1 minute interval between tests.
- Take three measurements and take the average value.

MEASURE TIME LAG
- Fully apply the parking brake.
- Start the engine and check idle speed.

Idle speed: 650 ± 50 rpm
(In the N position and air conditioner OFF)

- Shift the shift lever from the N to D position. Using a stop watch, measure the time from when the lever is shifted until the shock is felt.

Time lag: N-D Less than 1.2 seconds

- In the same way. measure the time lag for N R.

Time lag: N-R Less than 1.5 seconds





EVALUATION